Adsorption of Bisphenol-A by Eucalyptus bark/magnetite composite: Modeling the effect of some independent parameters by multiple linear regression


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BALCI B. , ERKURT F. E.

ADSORPTION SCIENCE & TECHNOLOGY, cilt.35, ss.339-356, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 35
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1177/0263617416676819
  • Dergi Adı: ADSORPTION SCIENCE & TECHNOLOGY
  • Sayfa Sayıları: ss.339-356

Özet

In the present study, Eucalyptus camaldulensis bark/magnetite composite was used for potential application as a low-cost adsorbent for the removal Bisphenol-A. The effects of various independent parameters, contact time, initial Bisphenol-A concentration, temperature, pH, and Eucalyptus camaldulensis bark/magnetite composite dosage on adsorption were investigated. It was found that the adsorption capacity of Eucalyptus camaldulensis bark/magnetite composite increases with the increasing of Bisphenol-A concentration, temperature, and decreasing dosage of Eucalyptus camaldulensis bark/magnetite composite. The adsorption capacity was found to be 290.6mg/g with 0.1 g Eucalyptus camaldulensis bark/magnetite composite at pH 7 and 50 degrees C The Freundlich isotherm model described the adsorption process better (R-2=0.998) than the Langmuir, Dubinin-Radushkevich, Jovanovic, and Vieth-Sladek isotherm models. According to multiple linear regression analysis, Eucalyptus camaldulensis bark/magnetite composite dosage is the most effective parameter on adsorption capacity at equilibrium and independent variables accounted for 79.4% of the total variability of equilibrium adsorption capacity of Eucalyptus camaldulensis bark/magnetite composite.